Pneumatic wheel for vehicles



Jan. 19, 1932. M. R. CONIGRAVE PNEUMATIC WHEEL FOR VEHICLES File d Nov. 27, 1929 INVENIOR 'ATTORNEY Patented Jan. 19,, 1932 UNITED s'm'rss PATENT OFFICE MOSTYN BEEVE GONIGBAVE,

FNEUILATIC WHEEL FOR VEHICLES Application filed November 27,.

I than heretofore and consequently requiring a reduced amount of material in manufacture,

while the abundant volume of compressed air in said cavity wheel acts as a constant air cushion for the tyre.

punctures and blow-outs,

A further advantage of the invention is that the usual air tube is dispensed with consequently eliminating troubles arising from also by the provision made'within the wheel for, the greater volume of air, same is maintained at a lower pressure and temperature than under existing conditions to which air is subject in the said tube as heretofore.

' The invention comprises a wheel made of a cavity or hollow formation and througha circumferential passage the therein compressed air is in constant communication with the.

surrounding tyre.

The invention also embodies improved means whereby the tyre is secured to the. rim of the wheel effecting an air tight junction, and also whereby the disc plates of the wheel are secured to each other in an air-tight manner.

The construction of the invention will be described with the aid of the accompanying drawings wherein a Fig. 1 is an end sectional view ofa wheel made in accordance with this invention.

Fig. 2 shows a tyre of a reduced depth to that as heretofore employed. p

' Referring to said drawings, the wheel comprisescompanion disc plates 1011, each of which may be of a cambered or other approved section. These plates at their central locality are secured to the peripheral flange 12 of the hub 13 by means of bolts 14, passing shown in Fig. 2.

to the means for securing said K tively,

through said flange 12, disc plates bracket 15 and sealing rings 16,

or LEElJEBVILLE, NEAR PERTH, Aus'rnALIA 1929, Serial No. 410,182, and in Australia September 9, 1929.

10 and 11, the latter made of rubber oranalogous natured material, the purpose of said rings 16 an air-tight seal at the junctional is to effect contact of said plates 10-'-11 with the bolts 14. These plates are at secured to each their outer peripheral locality other by bolts 17 and nuts 18,

while positioned between said plates and held on said bolts are distance collars 19, between said collars19 and the interior faces of said plates 10-11 are placed sealing rings 20 whose purpose is to eflect an air tight seal junctionally with the bolts 17 and plates 10-11. shown in Fig. 1

Referring The tyre 21 may be of the form or of a reduced depth as tyre to the wheel in an air tight junction, the

headings 22-23 are made of a more pliable material or nature than the main body of the tyrel These headings act as sealing, packing and wearing agents and integral with the tyre or may either be made be made grooved as shown and attachable thereto thus enabling renewals to be effected when said beadings become WOIII.

The outer peripheral edges of the disc plates 1011 are each formed wi wardly projectional lip as H 24-25 respecwhich embed or press into the inner th an outfaces of the said headings 22-23 when the clamping plates hereinafter mentioned are screwed up by means ,on the bolts 17 tyre and wheel I employ clamping the short lips of which as 2% 17 whilst at the same time of the outer nuts 30 Tn this junction between the adjustable circular plates of channel or other section, 25a embed or press into the outer faces of said headings 22-23 when said clamping plates are screwed n the bolts the long flanges 2627 make contact against the outer faces of the disc plates 110-11,

being rigidly held in posit on by lock washers bolts 17 passing through the disc plates 10--11.

and nuts 30 on said same and also through The lip's 2425-21a and 25a may the clamping plates milled on their face edges to prevent the tyre from creeping around the wheel.

The wheel as a unit is fitted with a valve 28 for inflating same.

In changing the tyre it-is only necessary to release the clamping plates Without any disturbance of the other parts of the Wheel. Further, when the wheel is used on motor vehicles, to same is secured a brake ban-d casing 29 and related members (not shown).

It is to be understood that I do not limit myself to the precise means for effecting an air tight junction between the tyre and the Wheel but that as shown and herein described is the preferred embodiment, as it is obvious that same may be varied Without departing from the scope and'ambit of the invention.

What I claim as my invention and desire to secure by LettersPatent is A vehicle tire, comprising a pair of rings of resilient material spaced apart having their outer peripheries connected by an annular member also formed of resilient material, and a'pair of annular members each formed of material of greater resiliency than said rings and each having a substantially U- shaped portion straddling the inner periphcry of one of said rings, the arms of each of said U-shaped portions which is disposed against the outer side of the ring associated therewith being longer than the other arm of such portion.

In testimony whereof I have hereunto set my hand.

' MOSTYN REEVE CONIGRAVE. 

